Is a Harder Coating Better? Hardness Scale Tests Explained

Posted by Daniel Libby on Jul 12, 2017 12:43:57 PM

 

 

 

 

Figure 1: Durometer Chart

There are several methods for testing the hardness of a coating. One common test method used in both field and lab settings is ASTM D2240 – Durometer Hardness. According to ASTM International, Durometer Hardness determines indentation hardness of substances classified as thermoplastic elastomers, vulcanized (thermoset) rubber, elastomeric materials, cellular materials, gel-like materials, and some plastics.

 

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